java/admin/src/main/java/com/exadel/frs/validation/EmailValidator.java
<gh_stars>0/*
 * Copyright (c) 2020 the original author or authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package com.exadel.frs.validation;

import java.util.regex.Pattern;

public class EmailValidator {

    private static final Pattern EMAIL_PATTERN =
            Pattern.compile("^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");

    public static boolean isValid(final String email) {
        return EMAIL_PATTERN.matcher(email).matches();
    }

    public static boolean isInvalid(final String email) {
        return !isValid(email);
    }
}